iHeartRadio's Apple TV app brings the core iHeartRadio iOS experience to the TV screen, including access to live stations, custom stations and podcasts. Registered and unregistered users will be able to listen live or listen to custom radio.

iHeartRadio has arrived on other set-top boxes in the past, including Android TV, but this is its first foray into Apple's TV ecosystem.

iHeartRadio is also amping up its integrations with Samsung. The company announced Tuesday that it will work with Multi-Screen, a new service that will let iHeartRadio cast to various Samsung devices. It will also work on the Gear S2 smartwatch. iHeartRadio is already available on the Apple Watch and on Android Wear.

Gear S2 users will be able to access iHeartRadio Live and Custom radio stations simply by rotating the watch bezel.

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